Spindle-holder for routing-machines



(No Model.) 2 SheetsSheet 1.

I H. RUNG. SPINDLE HOLDER FOR ROUTING MACHINES.

Patented June 4, 1895.

5. m J m 7 (No Model.) 2 Sheets-Sheet 2.

H. RUNG. SPINDLB HOLDER FOR ROUTING MACHINES.

Patented June 4, 1895.

4 4 (QMMQK 1717/6 n $0 1*. A M/L I17 6.16. Maw

States arena FFlQE.

HENRY HUNG, OF ROCHESTER, NEW YORK.

SPINDL E-HOLDER FOR ROUTING-MACHINES.

SZPEGIFIGATIQN forming part of Letters Patent No. 540,273, dated June 4,1895.

Application filecl March 4:. l 895.

To all whom it may concern.-

Be it known that I, HENRY RUNG, of Rochester, in the county of Monroeand State of New York, have invented a new and useful Improvement inSpindle-Holders for Routing- Machines, which improvement is fully setforth in the following specification and shown in the accompanyingdrawings.

Spindles for routing machines require to be run at a high velocity onaccount of which there is a great tendency for them to become heated,frequently necessitating the stopping of the machine for the purpose ofcooling the heated parts. The object of my invention is to provide aholder or head for the spindle so constructed and arranged that frictionwill be reduced to a "minimum, enabling the spindle to be run withoutbecoming heated.

The invention consists in providing a split barrel for holding thespindle, suitably chambered to receive fibrous material, and a chamberedjacket for the barrel to aid in keeping the latter cool,with means toadjust the parts to form suitable bearings, and other forms andconstructions hereinafter fully described and more particularly pointedout in the claims.

Referring to the drawings, Figure 1, drawn to a small scale, shows in.plan certain parts of a routing-machine with my improved parts attachedin place. Fig. 2 is aplan of the device, the operatingscrew beinghorizontally sectioned near the top. Fig. 3 is a horizontal section ofthe parts holding the spindle, taken on the dotted line 3 3 in Fig. 9, apart of the cap-plate being broken away. Fig. 4 is a side elevation ofthe spindle-barrel, a part being broken away and vertically sectioned,as on the dotted line 4: 4 in Fig. 3. Fig. 5-is an axial section of thespindle-barrel. Fig. 6 is a plan of the cap-plate for thespindle-barrel, showing the upper end of the latter. Fig. 7 is an axialsection of the upper part of the spindle barrel and some associatedparts, taken on the dotted line 7 in Fig. 2, the spindle being mainlybroken away. Fig. 8 is a condensed elevation of the spreader for thespindle-barrel. Fig. 9 is a front elevation of the device, seen asindicated by arrow 9 in Fig. 2. Fig. 10 is an axial section of thespindle-barrel and other parts associated with the spindle, taken on thedotted line 10 10 in Fig.

$en'al Nah 0,513. (170 model.)

2. Fig. 11 is a side elevation of the device, seen as indicated by arrow11 in Fig. 2, parts being broken away. Fig. 12 is a view of the lowerend of the. spindle, indicated by arrow 12 in Fig. 9. Fig. 13 is a planof a portion of the spindle-barrel, jacket, and other parts, parts beinghorizontally sectioned on the dotted lines 13 and 14 respectively, inFig. 9 to more clearly show interior parts. Fig. 14 is a side elevationof the gib-sheet and gib, seen as indicated by arrow in Fig. 13, a partof the gib-sheet being broken away. Fig. 15 is a view of the lower endof the jacket. Figs. 2 to 6, inclusive, and Figs. 9, 10, 11, 14-, and 15are drawn to a scale one-half working size, Figs. 7, 12, and 13 fullworking size, and Fig. 8 to a scale twice that of working size.

Referring to the parts shown, A, Fig. 1, is a liding table for holdingthe work, resting upon a frame B. O is an arm adapted to swing upon arestE in a horizontal plane, and

D a second arm, fulcrumed upon the arm 0, to swing horizontally over thetable upon a rest F. G and H are driving belts for the spindle, all ofthe above named parts being of common construction in machines of thischaracter.

The arm D is adapted to be adj usted laterally along the arm 0 and itcarries the spindle headland spindle K. Bythe term spindle head is meantall the parts collectively, associated with the spindle and carried bythe arm D.

The spindle, which is preferably made of steel, fully shown in Fig. 10,rests in a hard metal or composition barrel L adjusted to a fine bearingupon the spindle and is provided with a rigid belt pulley N above thebarrel, with jam nuts on to hold the parts in place. At its lower endthe spindle is threaded, at b, to receive a surfacing head'or othertool, not essential to my invention, and bored longitudinally to receivea cutter o. This cutter is held by a threaded part 01, nut g and part 6,common to these machines, the part e being formed with a blade-likepartf entering a slit in the cutter.

The barrel is formed with double walls-an outer and an inner circularwall-tied to gether at intervals, forming an annular oil spaceh which isfilled with some fibrous or oil-absorbing material as cotton waste, forinstance. On opposite sides of the interior of the barrel there areformed spiral slits t', Fig. 5, communicating between the space h andthe spindle hearing, which are also filled by the fibrous material bymeans of which the latter is brought into direct contact with thespindle. The spiral slits are long, extending nearly the entire lengthof the barrel.

The spindle barrel is split longitudinally, as shown at 77;, Figs. 3 and4, through one side so that it may be expanded or contracted for thepurpose of being accurately adjusted to the spindle. A spreader Z,consisting in part of a shaft, is placed longitudinally in theslit,provided at either end with a conical head, one being rigid withthe shaft and the other screwthreaded thereon, its construction beingfully shown in Fig. 8. The heads fit conical cavities in the ends of thebarrel, on account of which by turning the threaded head, by means of ascrew driver, the barrel will be slightly spread or sprung open.

The oil spaceh is closed at the bottom but open at the top and coveredwith a cap plate m, Figs. 5, 6 and 7, held in place by simple screws, atn. This ring is divided at one side to correspond with the division inthe barrel and is formed with openings a over the space h to admit ofoil passing upward to the base of the pulley.

Oil is supplied to the fibrous material in the space It and to thespindle from an ordinary oil cup 0, Figs. 2 and 9, the tube p of whichis threaded into the outer wall of the barrel, as appears in Fig. 7. Theinner end of the tube enters an opening 0 in the inner wall of thebarrel to a point near the spindle K the opening 0 being larger indiameter than the adjacent end of the tube so that the oil after flowingagainst the spindlemay turn back, as indicated by arrows, into the spaceit and be absorbed by the fibrous material therein.

The pulley N rests directly upon the upper end of the spindle barrel anda strand of oilconducting fibrous material 0" extends from the interiorof the stem up through an opening or ducts in the spindle barreladjacent to the spindle to form a contact with the under surface of thepulley to lubricate it. The pulley is formed at its lower end withopenings b, which as the pulley turns, pass over the openings at in thecap plate m. These openings, reduced in diameter at theupper end, passoutward through the surface of the pulley, as shown. On account of thisconstruction the revolving of the pulley produces a moderate upwarddraft which causes the oil to flow in small quantities up through theopenings at. This assists to lubricate the pulley and tends tocounteract the action of gravity upon the oil held by the fibrousmaterial and keep it to the upper part of the bearing of the spindle,which oil would otherwise tend to settle to the lower part of the spaceh.

The spindle barrel is inclosed in an iron jacket P, Figs. 3 and 10,which occupies a vertical cavity 0 in the arm D, as shown in Fig.

2. This jacket is of the same length as the spindle barrel and formedwith an annular chambert to form an air space between it and the barrel,and is longitudinally split nearly its whole length, as shown at d, Fig.10. It is formed with opposing lugs to at its upper end, one at eitherside of the kerf d, and provided with a clamping screw 1;, Figs. 2 and3, by means of which it may be tightened onto the barrel. Longitudinalopenings to, Figs. 3 and 15, are formed at the ends of the jacketcommunicating with the chamber which admit of a free circulation of airwithin the jacket around the barrel to cool the latter, the air enteringat the lower end and passing out at the upper end of the jacket. Thetube 1) of the oil cup passes freely through the jacket, as appears inFig. 7. Operating screws h, Figs. 9,11 and 13, for the barrel arethreaded horizontally through the opposite sides of the jacket inposition to bear against opposing parts of the barrel. The ends of thesescrews bear against portions of the barrel adjacent to the kerf 7t andact in directions at right angles to the plane of the kerf and in amanner adapted to compress the barrel by springing together and cause itto more firmly press the spindle. The action of these screws upon thebarrel is opposite to that of the spreader Z, by means of which screwsand spreader the bearing of the spindle in the barrel may be at any timenicely adjusted and wear compensated for.

The jacket is held by the cap R in a manner that adapts it to havevertical motions therein. It is formed at one side with a longitudinalV-shapc or angular piece 00, Figs. 2, 3 and 13, fitted to slide inacorresponding angular opening 2 in the cap piece or holder R which isrigidly secured to the arm D by bolts y. See also Figs. 9 and 11. A gib6, Figs. 2, 13 and 14, is provided to hold the jacket in place in thecap R. The gib is operated by a screwf (see also Fig. 9),passing throughthe cap R and threaded in the gib. A steel gib sheet g consisting of twoparts or wings forming a diedral angle is employed to bear directlyagainst the part at, it being between said part and the gib. Theleft-hand edges of the gib sheet and the gib, as appear in Fig. 13, abutdirectly against a shoulder of the cap B so that when the gib is drawndown by the bolt the jacket P with the spindle and other parts that itcarries, is held firmly in the cavity z of the cap. The gib sheet fromits elasticity tends of itself to hold the jacket with moderate force.When the gib is loosened for the purpose of raising or lowering thecutter the gib sheet serves to hold the jacket steady.

To move the spindle vertically a screw S, Figs. 2, 9 and 11, is employedparallel with the spindle.- This screw is provided with a hand wheel Tand is held by a hanger or rest V rigid with the cap R. The screw hasbearings at 7; t" in the hanger and is threaded in a nut 'm' rigid withthe jacket P. The screw is secured to place in the bracket by means of asimple tangent pin n passing through the bracket into an annular grooveformed near the end of the screw, a construction that is common andWell-known. By turning the hand wheel the spindle may be verticallyraised or depressed as may be required.

The belt pulley is formed with an upwardlyextended, circular part to,Figs. 2, 9 and 10, provided with holes 0' in which to' insert a lever tohold the spindle when the nut g is turned thereon or when a surfacinghead or other tool is turned upon the threaded part b.

That I claim as my invention is- 1. In a routing machine, incombinationwith a tool-carrying spindle, a holding barrel for the spindle, formedwith an outer cylindrical wall and an inner cylindrical wall with oilspace between, the inner wall extending around the spindle, in contacttherewith and constituting a bearing for the spindle, and openingsconnecting the oil space with the spindle bearing, substantially asshown and described.

2. In combination with the spindle of a routing machine a holding barrelfor the spindle formed with double walls and space between themcommunicating with the spindle bearing, the barrel being dividedlongitudinally at one side and means for expanding or contracting thebarrel and for supplying oil to the spindle, substantially as and forthe purpose set forth.

3. In a routing machine a spindle, a barrel holding the spindle formedwith an annular oil space outside of the spindle communicating with thespindle bearing, said oil space being closed at the bottom and openingout at the top, and a plate to cover said space formed with perforationscommunicating with the space, in combination with a belt pulley on thespindle adjacent to the plate formed with openings adapted to pass overthe perforations in the plate when the pulley is turned, substantiallyas and for the purpose specified.

4. The spindle of a routing machine and a holding barrel therefor formedwith an outer and an inner wall inclosing an oil space communicatingwith the spindle bearing, in combination withan oil-supply tube rigid inthe outer Wall and passing into an opening into the inner wall withclear space between the tube and said inner wall communicating with saidoil space, substantially as shown.

5; The spindle and pulley of a routing machine and a holding barrel forthe spindle formed with an outer and an inner wall inclosing an oilspace communicating with the spindle bearing, in combination with anoilsupply tube rigid in the outer wall and passing into an opening inthe inner wall, a duct communicating between said opening and the baseof the pulley and a strand of oil-conducting material in said ductconnecting the interior of the tube with the pulley, substantially asshown and described.

6. A rotatory spindle, and a holding barrel for the spindle in onepiece, the holding barrel being divided at one side, and means to expandor contract the barrel by spring action, in combination with a jacketfor the barrel, in one piece, and divided at one side throughout thegreater part'of its length, and means to contract the jacket upon thebarrel, substantially as and for the purpose specified.

7. A rotatory spindle,a barrel holding the spindle, and a chamberedjacket to inclose the barrel, and openings communicating with thechamber in the jacket, in combination with a holder for the jacket, andmeans for moving the jacket in the holder, substantially as set forth.

8. Aholding jacket for the spindle of arouting machine, adapted to slidein a holder, and a gib and a screw in the holder for controlling thejacket, in combination with an elastic gib sheet between the gib andadjacent parts, consisting of two parts or wings joined in an angle, onepart adapted to press the jacket and the other part crossing the screw,substantially as shown and described.

In witness whereof I have hereunto set my hand, this 2d day of March,1895, in the presence of two subscribing witnesses.

HENRY RUNG.

Witnesses:

ENos B. WHITMORE, M. L. WINSTON.

